Using A Pre-Defined Buffer Profile; Sample Buffer Profile Configuration - Dell S4048–ON Configuration Manual

Using a Pre-Defined Buffer Profile

Dell Networking OS provides two pre-defined buffer profiles, one for single-queue (for example, non-quality-of-service [QoS])
applications, and one for four-queue (for example, QoS) applications.
You must reload the system for the global buffer profile to take effect, a message similar to the following displays: % Info: For
the global pre-defined buffer profile to take effect, please save the config and reload the
system..
Dell Networking OS Behavior: After you configure buffer-profile global 1Q, the message displays during every bootup. Only one
reboot is required for the configuration to take effect; afterward you may ignore this bootup message.
Dell Networking OS Behavior: If you configure 1Q, save the running-config to the startup-config, and then delete the startup-config
and reload the chassis. The only way to return to the default buffer profile is to remove the 1Q profile configured and then reload the
chassis.
If you have already applied a custom buffer profile on an interface, the buffer-profile global command fails and a message
similar to the following displays: % Error: User-defined buffer profile already applied. Failed to apply
global pre-defined buffer profile. Please remove all user-defined buffer profiles.
Similarly, when you configure buffer-profile global, you cannot not apply a buffer profile on any single interface. A message
similar to the following displays: % Error: Global pre-defined buffer profile already applied. Failed to
apply user-defined buffer profile on interface Te 1/1. Please remove global pre-defined
buffer profile.
To apply a predefined buffer profile, use the following command.
• Apply one of the pre-defined buffer profiles for all port pipes in the system.
CONFIGURATION mode
buffer-profile global [1Q|4Q]
If the default buffer profile dynamic is active, Dell Networking OS displays an error message instructing you to remove the default
configuration using the no buffer-profile global command.

Sample Buffer Profile Configuration

The two general types of network environments are sustained data transfers and voice/data.
Dell Networking recommends a single-queue approach for data transfers.
Example of a Single Queue Application with Default Packet Pointers
!
buffer-profile fp fsqueue-fp
buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3
buffer dynamic 1256
!
buffer-profile fp fsqueue-hig
buffer dedicated queue0 3 queue1 3 queue2 3 queue3 3 queue4 3 queue5 3 queue6 3 queue7 3
buffer dynamic 1256
!
buffer fp-uplink stack-unit 1 port-set 0 buffer-policy fsqueue-hig
buffer fp-uplink stack-unit 1 port-set 1 buffer-policy fsqueue-hig
!
Interface range tengigabitethernet 1/1 - 18
buffer-policy fsqueue-fp
Dell#show run interface tengigabitethernet 1/10
!
interface TenGigabitEthernet 1/10
no ip address
Debugging and Diagnostics
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